The first eight-speed automatic transmission in a domestically manufactured automobile will debut in both the Chrysler 300 and Dodge Charger for 2012. The eight-speed slushbox, developed by German transmission specialist ZF and often found packed in luxury vehicles from automakers including Audi, Bentley, BMW, Range Rover and Rolls-Royce, will be mated to Chrysler's 3.6-liter V6 Pentastar engine on select models within the 300 and Charger lineups.